Fair Value Measurements - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Jul. 16, 2023	Jul. 15, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in other assets		$ 33,694			$ 29,351
731 Lexington Avenue Mortgage Loan, Retail Condominium | Interest rate derivatives (included in other assets) | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in other assets		22,249			26,718
Notional Amount		$ 300,000
Swapped Rate		1.76%
Rego Park II Shopping Center Mortgage Loan | Interest rate derivatives (included in other assets) | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in other assets		$ 2,764			2,622
Notional Amount		$ 202,544
Rego Park II Shopping Center Mortgage Loan | Interest rate derivatives (included in other assets) | Designated as Hedging Instrument | SOFR
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest cap rate		4.15%
731 Lexington Avenue Mortgage Loan, Office Condominium | Interest rate derivatives (included in other assets) | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in other assets		$ 8,681			$ 11
Notional Amount		$ 500,000
Payments for derivative instrument	$ 11,258
731 Lexington Avenue Mortgage Loan, Office Condominium | Interest rate derivatives (included in other assets) | Designated as Hedging Instrument | LIBOR
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest cap rate				6.00%
731 Lexington Avenue Mortgage Loan, Office Condominium | Interest rate derivatives (included in other assets) | Designated as Hedging Instrument | Prime Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest cap rate			6.00%
Interest rate		8.50%